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Waterfox vs IronFox: catalog facts
Waterfox	IronFox
Free Free and open source under MPL-2.0. Development is funded by donations.	Free Free and open source under the MPL.
Windows, macOS, Linux	Android
Telemetry and data collection are removed from the build, not just disabled in preferences Ad blocking and private, anonymised DNS are on by default	Hardened defaults and uBlock Origin built in, with no configuration needed Continues Mull's work under active maintenance
One small team tracking Mozilla, so security updates land after Firefox's The project has changed hands in the past, which matters if you are picking it on trust	Android only Hardened defaults break some sites until exceptions are made
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.